System of printing



Oct. 16, 1934; c. CHISHOLM I I 1,976,715

SYSTEM OF PRINTING Filed Dec. 22, 1950 fibma Patented Oct. 16, 1934 UNITED STA a SYSTEM'OF BRINTING Clifton Chisholm, ClevelancL', hio,.assignor to Multigrapli Company, Wilmington,

poration -ofDialaware Del., a cor.-

Application DecemberJZZ, 1930; SerialNo. 503,873 Claims. (01: 101-396) This" invention" is concerned with a system of printing;.where it is desiredto retain the form for subsequent use, either 'in'its' original condition or with substitutions, additions oromissions.

Itis an object of' my invention to providethe meansfOrcarrying out such" system; wherein the printing may be affected by a rotary press and the'formistoredflatwise, this being effected by making'the form-flexibleso-that it may be flat or curved about a printing drumand held thereon; 7

Another object .is' to so devise the' printing members'that they'may be produced in an ordinary linotype' machine andfthereafter; by a very simple operation, converted'into a condition suitable for mounting onia flexible' galley, which" may be stored: flat or curved aboutithe drum for printing;

My invention will "be apparent fromthe followingidescription iniconnectiorr with the'drawingillustrating the galley and "printingmembers;

In the drawing; Fig. l'isaplan partly broken away of a flexible galley carrying'a number. of, my line printing members; Fig. 2 is atransverse -'section through the. galley, that is, lengthwise of the line printingmemb'ers, as indicated by the line 2--2 on Fig. 1; Fig. 3 is a cross section at right angles to Fig. 2 as indicated by the line 3-3 on Fig. 1; Fig. 4 is a side elevation of a printing slug of ordinary type height as cast by a linotype machine; Fig. 5 is a view of this full height slug after the ends have been grooved, this view indicating the plane of severence for making the low height slug; Fig. 6 is a vertical section through the slug of Figs. 4 and 5, as indicated by the line 6-6 on Fig. 4; Fig. 7 is a perspective of my low height slug formed by cutting off the lower portion of the slug of Fig. 5.

In carrying out my invention, I cast, in a linotype or similar machine, a slug of the character shown in Figs. 4 and 6. This is the ordinary slug, except that the mould at its ends is shortened for a little less than the entire height of the slug, as for instance by filling strips set into the ends of the mould, which strips are slightly of Fig.- 1 and in perspective in'Fig. '7 and'in side elevation'in Fig. 2. Thisslug has grooves atits end'by which itmay beretained in the galley. Furthermore, the length of the slug below the grooves is less than above the grooves to allow the-printingcharacters'on the face of the slug. to overhang theretaining device, as about to be explained. l

It is simple and economical to cut the notches al in the ends of the slug and to sever the slug atthe line-a2 at one operation, this being effected bya gang of saws arranged to engage the slug simultaneously at the opposite-ends and along theline'aZ. Accordingly, when the slugs are cast and'dischargedby the mould; it needs only one operation to make the completed slugs of Fig. 7."

In- Figs. 1, 29nd 3, I have shown a flexible galley comprising a base plate B on which-there are retaining strips C surmounting narrower fillirig stripsCli To enable the convenient flexing of' the" galley, thestrips Cand C1 are fixedly anchoredonly atone point and areslidable on eacl'r'other-"and on-the base. This is eifected by suitable tongues b(which may be cut-out and turned up portions" of the "base plate 13) which pass through'slots chi-the strips, but one of which (preferably at the center indicated by b1) passes through a hole in the strip of substantially the same size as the tongue. The result is that the strips cannot be displaced but may slide on each other during the flexing of the galley.

The above described mounting of the retaining strips C and C1 on the flexible base is shown, described and claimed in prior application of myself and Peter M. Colquhoun No. 445,501 filed April 18th, 1930, and reference is made to that application for claims on that feature.

I find that a certain width of filler strip Cl 'is desirable to retain the holding strip C in proper position. Now, it is desirable to have the printing columns closer together than the distance corresponding to the filler strip 01. I effect this by making the slug tongues beneath the end notches a1 shorter than the tongues above such notches al. This peculiar end formation which is cheaply eifected on a cast slug as heretofore explained, enables the slugs to be mounted in columns on opposite sides of the retaining device with a very little space between the columns, as illustrated in Figs. 1 and 2.

A suitable end stop is desirable at the top of the galley, and I effect this by a cross bar D riveted to the base plate B. I may make this same cross bar a retaining device for the galley on the drum by bending it downwardly and backwardly to form a hook, as shown at d in Fig, 3. This feature however is covered in a copending application of mine. And end strip D1 similar to the strip D may be employed at the other end of the galley, as illustrated in Fig. l, enabling either end to be at the top of the columns.

The slugs are mountedon the galley by placing them diagonally, as in the case of the slug A2 in Fig. 1, and then skewing the slugs into position at right angles to the retaining strip, as

indicated at A1. This enables the slugs to be very quickly mounted in making up the form. This system of mounting also enables any slug to be quickly removed whenever desired. To that end the form is simply separated, as shown in Fig. 1, and the undesired slug is skewed into diagonal position and removed as illustrated in A2. Fig. 1 shows in the right hand portion, a compact printing form of line slugs A1 held against the end stop D by a follower E, ready for printing. The left hand portion of this figure shows a column separated by drawing down the follower E for the removal or replacement of a slug.

The follower E which normally retains. the printing form compacted, is shown as having tongues e and e 1 atitsends embracing the edges of the strip C. This feature however is covered in the application No. 445,501 heretofore mentioned.

It will be seen from the description given that.

arates the lines, they are readily compacted by shoving up the follower E to tighten the form,

the frictional engagement of the followerwith beneath the retaining strips.

the galley slats holding the form compact.

After printing the form is removed from the press and flattened, the slugs and followers slid-,

ing slightly lengthwise of the column, as may be required. The galley with its form may be retained for subsequent use, and, if alterations additions or subtractions are to be made, they can be readily effected while the form is flat, and thereafter the revised form is ready for mounting on the drum for printing.

1. As a new article of manufacture, a printing slug comprising a low height narrow solid member having a single line of printing characters on its face and having grooves in its opposite ends, the body of the slug beingv longer above the grooves than below them.

2. The combination with a flexible galley having a backing plate and retaining strips mounted thereon, of a series of line slugs resting on the backing strip and held by the retaining strips,

.each line slug being a solid member having ing a base and. filler strips surmounted by wider retaining strips slidably held on the base, of line slugs having grooves in their ends and body portions which are of less length below the groves than above them.

4. An. apparatus for printing, comprising lowheight solid integral cast slugs, each having .a single line of characters and having projections at its ends, and a flexible galley comprising a backing plate and longitudinal overhanging strips which overlie the end projections of the slugs,

whereby a form is produced which may be bent about a drum for printing. a 1

5. An apparatus for printing, comprising a set of solid slugs having a single line of characters and formed with overhanging lugs at their ends adjacent theprinting face, grooves in the ends of they slugs, the slugsbeing longer above the grooves thanb'elow them,1a nd a flexible galley whichhas overhanging retaining strips occupy ing the grooves and narrower supporting strips CLIFTON CHISl-lOLlVl. j 

